Laser‐Regulated Iridium‐Diffused Nitrogen–Carbon Sites for Enhanced Hydrazine‐Assisted Alkaline Seawater Splitting and Zinc–Hydrazine Batteries

while maintaining stability. Moreover, density functional theory calculations reveal that the strong electronic interaction between the Ir nanoclusters and the NC matrix enhances mass transfer and electron conductivity, significantly boosting HER activity and accelerating the kinetics of hydrazine dehydrogenation. Consequently, the Ir-NC-2 catalyst performs efficiently in a Zn-hydrazine battery, achieving high energy efficiency of 95.5% and demonstrating excellent stability for 120 h (360 cycles), indicating its potential for practical applications.